package com.nannybear.Model;

import java.util.ArrayList;
import java.util.Observer;

/**
 * \brief Warn observer of a new humidity threshold
 * \author Audrey LOISEAU
 * \date 6-04-2015
 */
/********************************* COPYRIGHT *********************************
 * Copyright (c) 2015, Audrey LOISEAU and Benjamin LANCINOT.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *************************************************************************************/

public class HumidityThreshold extends Constant{
    /********** DECLARATIONS **********/
    private final ArrayList<Observer> observers;
    private String valueHumThreshold;

    /************ METHODS ************/
    /**
     * \brief Constructor
     */
    public HumidityThreshold(){
        this.observers = new ArrayList<>();
        valueHumThreshold = "1";
    }

    /**
     * \brief Change the humidity threshold by notify observer
     * \param humThreshold    The new humidity threshold
     */
    public void changeThreshold(String humThreshold){
        this.valueHumThreshold = humThreshold;
        notifyObservers();
    }

    /**
     * \brief Add the class as observable
     * \param obs   The new observer
     */
    public void addObserver(Observer obs){
        observers.add(obs);
    }

    /**
     * \brief Delete the class as observable
     * \param obs   The observer to delete
     */
    public synchronized void deleteObserver(Observer obs){
        observers.remove(obs);
    }

    /**
     * \brief Notify the observers
     */
    public void notifyObservers(){
        for (int i = 0; i < observers.size(); i++) {
            observers.get(i).update(this, this.valueHumThreshold);
        }
    }

    /*********** ACCESSORS ***********/
    /**
     * \brief Get method for the humidity threshold value
     */
    public String getValueHumThreshold() {
        return valueHumThreshold;
    }
}
